Booligan Airsoft & Shooting Sports checks out the Advanced 30mm Red Dot Sight from Primary Arms in this video review... "Many airsoft grade optics won't stand up to the rigors to gameplay use or replicas with recoil. Unfortunately, the next option up is usually very expensive real firearm sights that can eclipse the price of your replica by several multitudes. Primary Arms does a great job filling that gap, building real firearm optics with great performance and features, but at prices in line with high end airsoft replicas. Today, we're taking a look at their 30mm red dot sight and going over some of its features."